Lots of people saying "you can lose a ton of money" If you buy 10 shares at $200, that's $2k out of your bank acount, and it's gone, just like if you bought a

Lots of people saying "you can lose a ton of money" If you buy 10 shares at $200, that's $2k out of your bank acount, and it's gone, just like if you bought a car. How do you lose more than that? I'm not talking about shorting and stuff, just buying shares, hoping it goes up, and selling it later.